6428143247 has 8 divisors (see below), whose sum is σ = 6788444544. Its totient is φ = 6074576728.

The previous prime is 6428143231. The next prime is 6428143313. The reversal of 6428143247 is 7423418246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6428143247 - 2⁴ = 6428143231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428143847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681733 + ... + 1685550.

It is an arithmetic number, because the mean of its divisors is an integer number (848555568).

Almost surely, 2^6428143247 is an apocalyptic number.

6428143247 is a deficient number, since it is larger than the sum of its proper divisors (360301297).

6428143247 is a wasteful number, since it uses less digits than its factorization.

6428143247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367389.

The product of its digits is 258048, while the sum is 41.

The square root of 6428143247 is about 80175.7023480306. The cubic root of 6428143247 is about 1859.3529995211.

The spelling of 6428143247 in words is "six billion, four hundred twenty-eight million, one hundred forty-three thousand, two hundred forty-seven".